The O-Ring, cataloged under National Stock Number 5331-01-271-2294, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Aerea Spa. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-271-2294 |
| Primary Part Number | MS29513-013 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Aerea Spa |
| Status | ACTIVE |
| Cross-Sectional Height | 0.062 INCHES NOMINAL IN |
| Outside Diameter | 0.566 INCHES NOMINAL IN |
| Hardness Rating | 65.0 SHORE DUROMETER A NOMINAL |
| Criticality Code Justification | ADYT |
| Elongation Percentage | 200 MAXIMUM |
| Center Hole Diameter | 0.421 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN |
| Material | RUBBER POLYISOPRENE SYNTHETIC CLASS IR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| MS29513-013 | Aerea Spa (ITA) |
| Reference | Meaning |
|---|---|
| MS29513-013 | 5/9 Secondary reference U.S. Government activity |
| MS29513-013 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MS29513-013 | 5/9 Secondary reference U.S. Government activity |
| LL-HX5-0930 | 5/9 Secondary reference Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| NMP-1128 PC27-0.25X0.5 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
NSN 5331-01-271-2294 is a O-Ring, manufactured by Aerea Spa, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-271-2294 has 1 manufacturer part number on file: MS29513-013 (Aerea Spa).
Key specifications for MS29513-013: Cross-Sectional Height: 0.062 INCHES NOMINAL IN; Outside Diameter: 0.566 INCHES NOMINAL IN; Hardness Rating: 65.0 SHORE DUROMETER A NOMINAL; Criticality Code Justification: ADYT. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.